Apparatus for tensioning reinforcement in a concrete pole mold

Details Apparatus for tensioning reinforcement in a concrete pole mold Apparatus for tensioning reinforcement in a concrete pole mold

1974-12-30

1976-11-23

Husar, Francis S.

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

And means to apply stress to preform and uniting in stressed...

264229, B28B 2160

Patent

active

039934195

ABSTRACT:
This invention relates to an apparatus for tensioning reinforcements in the process of manufacturing concrete poles and the like having the structure in which a tension plate of a circular ring shape is fixed to an end plate for setting reinforcements placed inside a mold in a freely slidable manner, the inner surface of the tension plate is engaged with a jack rod, the outer periphery of the tension plate is provided with a plurality of protuberances whose thickness is less than that of the tension plate and which are spaced at equal intervals thereabout, a set ring of a circular ring shape is provided for contacting a flange part at the end of the mold, and the inner surface of the set ring is contacted with the outer periphery of the tension plate and has a plurality of concave parts into which the said protuberances can be disposed; and additional structure by which methods of engaging the tension plate with the jack rod and disengaging the plate from the rod are able to be accomplished in different ways.

REFERENCES:
patent: 3162709 (1964-12-01), Davidson
patent: 3583047 (1971-06-01), Uchiyama

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